Please use this identifier to cite or link to this item:
Title: A robust anionic sulfonated ferrocene derivative for pH-neutral aqueous flow battery
Authors: Yu, J
Salla, M 
Zhang, H
Ji, Y
Zhang, F 
Zhou, M
Wang, Q 
Issue Date: 1-Aug-2020
Publisher: Elsevier BV
Citation: Yu, J, Salla, M, Zhang, H, Ji, Y, Zhang, F, Zhou, M, Wang, Q (2020-08-01). A robust anionic sulfonated ferrocene derivative for pH-neutral aqueous flow battery. Energy Storage Materials 29 : 216-222. ScholarBank@NUS Repository.
Abstract: © 2020 Despite that aqueous organic redox flow batteries (AORFBs) have recently been extensively investigated for low-cost large-scale energy storage, the option for viable catholyte remains limited. This is further constrained by the incompatibility of those positively charged redox species with the cation-exchange membranes. Here, we report an anionic sulfonated ferrocene derivative (Fc-SO3Na) bearing negatively charged moiety to tackle the above issue. The molecule has a solubility of 2.5 ​M in water and reveals remarkable electrochemical reversibility and stability in pH-neutral solution. A flow battery with Fc-SO3Na cathodic redox species and zinc metal as anode demonstrated superb performance in conjunction with sulfonated poly (ether ether ketone)/titanium oxide composite membrane (SPEEK/TiO2) as separator. The cell exhibits a capacity retention of 99.9975% per cycle at low concentration and at high concentration it shows an energy density of 27.1 ​Wh L−1 which is fairly comparable to the VFBs (25–30 ​Wh L−1). The volumetric capacity of catholyte could be further promoted to 293.5 Ah L−1 via redox-targeting reaction when LiFePO4 is loaded into cathodic tank.
Source Title: Energy Storage Materials
ISSN: 24058297
DOI: 10.1016/j.ensm.2020.04.020
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Main Text_16042020.docxAccepted version1.97 MBMicrosoft Word XML


Post-print Available on 01-08-2022


checked on Oct 23, 2021

Page view(s)

checked on Oct 14, 2021


checked on Oct 14, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.